Westermo MM-61 User Manual
Page 4
Specifications MM-61
Transmission:
Asynchronous/synchronous*,
Power supply:
+5V DC, ±5% 300 mA via
full/half duplex or simplex
mains adapter PS-6
Interface 1:
EIA RS-232/CCITT V.24
Data rate:
Up to 38 400 bit/s arbitrary for
25 pole D-sub connector
each channel at the same time
male/female. Switchable
Power consumption:
Max 7.0 VA at 230V
between DCE/DTE
Temperature range:
5-50°C ambient temperature
Interface 2:
See table of power budget,
Humidity:
0-95% RH without
ST-connectors
condensation
Isolation:
3000V transformer
Dimension:
60x22x98 mm ( WxHxD)
( Power Supply)
Weight:
0.07 kg
Main adapter:
PS-6, 1.5m cable
* Cable is required between connected equipment and MM-61 25 pole D-sub connector.
Switch settings MM-61
The
MM-61 is a 4-channel fibre optic modem. There are two versions, 25 pole male D-sub connector
or 25 pole female D-sub connector on the RS-232-C side. To adjust to the surrounding equipment
it is possible to select DCE or DTE function by removing the lid and shift X1/X2. The easiest
way to open the plastic case is by placing and turning a coin or screwdriver in the gaps
between top and bottom.
6
;
5;
7;
;
%
X 1 /X 2 S elec tio n o f fu n ction D C E /D T E
(T h e c a ble is p lac ed in re qu ired co n n ec to r)
S 2 S elec tio n o f n o rm a l o r in ve rte d sig n al
o n th e lin e b etw ee n m od e m s
S2
Signal on the line
= Jumper
1
2
3
between modems
Normal
= Factory setting
Inverted
Power budget
Fibre
820 nm
50/125 µm
3.7 dB
62.5/125 µm
7.5 dB
200 PCS
18 dB